Recebido em 4/1/00; aceito em 11/10/00Agricultural wastes from cactus Cereus peruvianus and Opuntia ficus indica were investigated for protein production by solid substrate fermentation. Firstly, the polyelectrolytes were extracted and used in water cleaning as auxiliary of flocculation and coagulation. The remaining fibrous material and peels were used as substrate for fermentation with Aspergillus niger. Glucoamylase and cellulase were the main enzymes produced. Amino acids were determined by HPLC and protein by Lowry's method. After 120 hours of fermentation the protein increased by 12.8%. Aspartic acid (1.27%), threonine (0.97%), glutamic acid (0.88%), valine (0.70%), serine (0.68%), arginine (0.82%), and phenylalanine (0.51%) were the principal amino acids produced.
1Moisés Alves de Oliveira* RESUMO: Neste trabalho são apresentadas algumas reflexões acerca do processo de alfabetização científica em atividades práticas de um clubinho de ciências. A questão que motivou a pesquisa foi: Quais mediações articulam a alfabetização científica e a realidade das coisas? A perspectiva teó-rico-metodológica valeu-se do conceito latouriano de inscrição e da perspectiva etnográfica não moderna. A análise foi desenvolvida em duas etapas: A) uma descrição considerando o efeito da exposição visual como inscrição direta, que mantém dicotomizadas as concepções de natureza e conhecimento; B) levando-se em conta as mediações que se articulam como inscrição para tornar possível um conhecimento científico específi-co. Finalizamos propondo que a realidade existe quando a inscrição torna inseparáveis os meios que produzem do que é produzido, segundo um maneirismo particular. Palavras-chave: Alfabetização Científica; Inscrição; Clubinho de Ciências.
SCIENTIFIC LITERACY AT A SCIENCE CLUB OF ELEMENTARY SCHOOL: A MATTER OF INSCRIPTION ABSTRACT:This article shows some reflections about the scientific literacy process in practical work at a science club. The question that motivated the research was: What kind of intervention articulates the scientific literacy and the reality? The perspective of this work was based in Latour's concept of inscription and a non-modern ethnographic perspective. The analysis happened in two stages: A) a description considering that the effect of a visual exhibition as direct inscription, keeps the nature and knowledge conceptions separate; B) by considering the interventions that are articulated as inscriptions to enable a specific scientific knowledge. We finalize the article proposing that the reality exists when the inscription makes inseparable the means that produce from what is produced, according to a particular way.
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